In-plane stiffness of traditional timber floors strengthened with CLT

Five full-scale timber floors were tested in order to analyze the in-plane behaviour of these structural systems. The main objective was to assess the effectiveness of the in-plane strengthening using cross laminated timber (CLT). For that, one unstrengthened specimen (original), one specimen strengthened with a second wood board, two specimens strengthened with 3 CLT panels and one specimen strengthened with 2 CLT panels were tested. Moreover, because of its importance in the composite behaviour, the first phase of the experimental program was composed by push-out tests on specimens representing the shear connection between the timber beams and the CLT panels. This paper describes the tests performed and the numerical modelling aimed to evaluate the composite behaviour of the strengthened timber floors

IN -PLANE STIFFNESS OF TIMBER FLOORS STRENGTHENED WITH CLT

Branco, J.M., Kekeliak, M., Lourenço, P.B. , In-plane stiffness of timber floors strengthened with CLT. European Journal of Wood and Wood products. (2015) Five full-scale timber floors were tested in order to analyse the in-plane behaviour of these 2 structural systems. The main objective was an assessment of the effectiveness of in-plane 3 strengthening using cross-laminated timber (CLT). To that end, one unstrengthened 4 specimen (original), one specimen strengthened with a second layer of floorboards, two 5 specimens strengthened with three CLT panels, and one specimen strengthened with two 6 CLT panels, were tested. A numerical analysis was then performed in order to analyse the 7 composite behaviour of the timber floors in more detail . Due to its importance as regards 8 composite behaviour, the first phase of the experimental programme was composed of push-9 out tests on specimens representing the shear connection between the timber beams and the 10 CLT panels. This paper describes the tests performed and the numerical modelling applied 11 CLT panels. This paper describes the tests performed and the numerical modelling applied 11 to evaluate the composite behaviour of the strengthened timber floors. The use of CLT panels 12 is revealed to be an effective way to increase the in-plane stiffness of timber floors, through 13 which the behaviour of the composite structure can be significantly changed, depending on 14 the connection applied, or modified as required. Branco, J.M., Kekeliak, M., Lourenço, P.B. , In-plane stiffness of timber floors strengthened with CLT

In-plane stiffness of timber floors strengthened with CLT

Five full-scale timber floors were tested in order to analyse the in-plane behaviour of these structural systems. The main objective was an assessment of the effectiveness of in-plane strengthening using cross-laminated timber (CLT). To this end, one unstrengthened specimen (original), one specimen strengthened with a second layer of floorboards, two specimens strengthened with three CLT panels, and one specimen strengthened with two CLT panels, were tested. A numerical analysis was then performed in order to analyse the composite behaviour of the timber floors in more detail. Due to its importance as regards composite behaviour, the first phase of the experimental programme was composed of push-out tests on specimens representing the shear connection between the timber beams and the CLT panels. This paper describes the tests performed and the numerical modelling applied to evaluate the composite behaviour of the strengthened timber floors. The use of CLT panels is revealed to be an effective way to increase the in-plane stiffness of timber floors, through which the behaviour of the composite structure can be significantly changed, depending on the connection applied, or modified as required.The present work is part of a research project supported by the Quadro de Referencia Estrategico Nacional (QREN) programme, Project Number 21635, from the Agencia de Inovacao (ADI). This research activity fits into RILEM TC 245 "Reinforcement of Timber Elements in Existing Structures". The authors would like to thank Binderholz and Rotho Blaas for all the support offered, particularly in the preparation and execution of the experimental programme